Least Common Multiple (LCM) of 38 and 140
The least common multiple (LCM) of 38 and 140 is 2660.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 38 and 140?
First, calculate the GCD of 38 and 140 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 38 ÷ 140 = 0 remainder 38 |
| 2 | 140 ÷ 38 = 3 remainder 26 |
| 3 | 38 ÷ 26 = 1 remainder 12 |
| 4 | 26 ÷ 12 = 2 remainder 2 |
| 5 | 12 ÷ 2 = 6 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 70 and 87 | 6090 |
| 31 and 40 | 1240 |
| 49 and 133 | 931 |
| 36 and 162 | 324 |
| 24 and 153 | 1224 |